/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.examples.bpmn.executionlistener;

import java.util.ArrayList;
import java.util.List;

import org.activiti.bpmn.model.FlowElement;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.ExecutionListener;
import org.activiti.engine.impl.el.FixedValue;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.impl.util.ProcessDefinitionUtil;

/**


 */
public class RecorderExecutionListener implements ExecutionListener {

  private static final long serialVersionUID = 1L;

  private FixedValue parameter;

  private static List<RecorderExecutionListener.RecordedEvent> recordedEvents = new ArrayList<RecorderExecutionListener.RecordedEvent>();

  public static class RecordedEvent {
    private final String activityId;
    private final String eventName;
    private final String activityName;
    private final String parameter;

    public RecordedEvent(String activityId, String activityName, String eventName, String parameter) {
      this.activityId = activityId;
      this.activityName = activityName;
      this.parameter = parameter;
      this.eventName = eventName;
    }

    public String getActivityId() {
      return activityId;
    }

    public String getEventName() {
      return eventName;
    }

    public String getActivityName() {
      return activityName;
    }

    public String getParameter() {
      return parameter;
    }

  }

  public void notify(DelegateExecution execution) {
    ExecutionEntity executionCasted = ((ExecutionEntity) execution);
    
    org.activiti.bpmn.model.Process process = ProcessDefinitionUtil.getProcess(execution.getProcessDefinitionId());
    String activityId = execution.getCurrentActivityId();
    FlowElement currentFlowElement = process.getFlowElement(activityId, true);
    
    recordedEvents.add(new RecordedEvent(
        executionCasted.getActivityId(),
        (currentFlowElement != null) ? currentFlowElement.getName() : null,
        execution.getEventName(), 
        (String) parameter.getValue(execution)));
  }

  public static void clear() {
    recordedEvents.clear();
  }

  public static List<RecordedEvent> getRecordedEvents() {
    return recordedEvents;
  }

}
